Private by design
Audio converters that never upload your file.
Pick your source format. Every converter below runs entirely in your browser — the file stays on your device, start to finish.
Audio → MP3
WAV → MP3
WAV files are uncompressed, so they're large — often ten times the size of an MP3. Converting to MP3 shrinks them for phones, email, and players while keeping the audio that matters.
M4A → MP3
M4A is what iPhones, Apple Music, and Voice Memos produce, but some older players, car stereos, and apps only accept MP3. Converting makes the file play everywhere.
AAC → MP3
AAC delivers great quality for its size and is everywhere in streaming and Apple's ecosystem — but MP3 remains the safest format for universal playback. Convert when you need something that plays anywhere.
OGG → MP3
OGG (Vorbis) is open and efficient, common in games and on Linux, but many mainstream apps and devices don't support it. Converting to MP3 makes those files play on practically anything.
FLAC → MP3
FLAC is lossless, so it preserves every detail — and takes a lot of space. Converting to MP3 frees up storage and fits more music on phones and players, with a quality drop most people can't hear at high bitrates.
Video → MP3 (extract audio)
MP4 → MP3
MP4 is the most common video format, and often all you want from it is the audio — a song, a lecture, a podcast. mp3bat extracts the audio track to MP3 right in your browser, no upload.
MOV → MP3
MOV is Apple's QuickTime video format, straight off iPhones and Macs. When you only need the sound, mp3bat pulls the audio track out to MP3 — privately, in your browser.
MKV → MP3
MKV (Matroska) is a flexible video container popular for high-quality rips and recordings. mp3bat extracts its audio track to MP3 in your browser, with nothing uploaded.
WEBM → MP3
WEBM is the open web video format, common for downloads and recordings. mp3bat extracts its audio to MP3 entirely in your browser — no upload, no sign-up.